daviddoji/CalculusWithJuliaNotes.jl
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

rm WeaveSupport

Browse Source
This commit is contained in:
jverzani
2022-09-19 16:10:49 -04:00
parent 847109baea
commit e35ee2f6ca
66 changed files with 213 additions and 883 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
quarto/precalc/calculator.qmd
View File

@@ -6,14 +6,6 @@
```{julia}
#| echo: false
using CalculusWithJulia
using CalculusWithJulia.WeaveSupport
frontmatter = (
title = "From calculator to computer",
description = "Calculus with Julia: Replacing the calculator with a computer",
tags = ["CalculusWithJulia", "precalc", "replacing the calculator with a computer"],
);
nothing
```
@@ -25,6 +17,7 @@ The following image is the calculator that Google presents upon searching for "c
```{julia}
#| echo: false
#
imgfile = "figures/calculator.png"
caption = "Screenshot of a calculator provided by the Google search engine."
ImageFile(:precalc, imgfile, caption)
@@ -50,7 +43,7 @@ txt = """
</iframe>
</center>
"""
CalculusWithJulia.WeaveSupport.HTMLoutput(txt)
HTMLoutput(txt)
```
## Operations
@@ -90,23 +83,19 @@ An expression like $6 - -3$, subtracting minus three from six, must be handled w
6 - -3
```
(If no space is included, the value "`--`" is parsed like a different, undefined, operation.)
```{julia}
#| echo: false
warning(L"""
(If no space is included, the value "`--`" is parsed like a different, invalid, operation.)
:::{.callout-warning}
## Warning
`Julia` only uses one symbol for minus, but web pages may not! Copying
and pasting an expression with a minus sign can lead to hard to
understand errors such as: `invalid character "−"`. There are several
Unicode symbols that look similar to the ASCII minus sign, but are
Unicode symbols that look similar to the ASCII minus sign, though
different. These notes use a different character for the minus sign for
the typeset math (e.g., $1 - \pi$) than for the code within cells
(e.g. `1 - 2`). Thus, copying and pasting the typeset math may not work as expected.
:::
""")
```
### Examples
@@ -369,14 +358,14 @@ In most cases. There are occasional (basically rare) spots where using `pi` by i
### Numeric literals
For some special cases, Julia implements *multiplication* without a multiplication symbol. This is when the value on the left is a number, as in `2pi`, which has an equivalent value to `2*pi`. *However* the two are not equivalent, in that multiplication with *numeric literals* does not have the same precedence as regular multiplication - it is higher. This has practical importance when used in division or powers. For instance, these two are **not** the same:
For some special cases, Julia parses *multiplication* without a multiplication symbol. This is when the value on the left is a number, as in `2pi`, which has an equivalent value to `2*pi`. *However* the two are not equivalent, in that multiplication with *numeric literals* does not have the same precedence as regular multiplication - it is higher. This has practical importance when used in division or powers. For instance, these two are **not** the same:
```{julia}
1/2pi, 1/2*pi
```
Why? Because the first `2pi` is performed before division, as multiplication with numeric literals has higher precedence than regular multiplication, which is at the same level as division.
Why? Because the first `2pi` is performed before division, as multiplication with numeric literals has higher precedence than regular multiplication, which is at the same level as division.
To confuse things even more, consider
@@ -436,7 +425,8 @@ julia = [
"`factorial`"
]
CalculusWithJulia.WeaveSupport.table(DataFrame(Calculator=calc, Julia=julia))
d = DataFrame(Calculator=calc, Julia=julia)
Table(d)
```
Using a function is very straightforward. A function is called using parentheses, in a manner visually similar to how a function is called mathematically. So if we consider the `sqrt` function, we have:
@@ -1068,4 +1058,3 @@ choices = [
answ=1
radioq(choices, answ)
```